Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Mastering Java: The Ultimate Quiz for 'Thinking in Java'. Dive deep into Java with multiple-choice questions. Challenge yourself with quiz questions designed to test and improve your understanding of the 'Thinking in Java' book. Get ready for your exam!

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How does a HashSet store elements?

In a linked list
Using a hashing technique
In insertion order
In ascending order

The correct answer is: Using a hashing technique

A HashSet uses a hashing technique to store elements in a way that allows for efficient retrieval of data. The data is stored in an array-like structure called a hash table. Each element is assigned a unique location in the hash table based on its hash code. This allows for fast lookup and retrieval of data. Options A, C, and D are incorrect because HashSet does not use a linked list, insertion order, or ascending order to store elements.